Finding the Fourth Proportional to 3,984.51, 5,498.81 and 2,216.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,984.51 : 5,498.81 = 2,216.10 : x
2. Step 2: Convert to fraction form
   3,984.51/5,498.81 = 2,216.10/x
3. Step 3: Cross multiply
   3,984.51x = 5,498.81 × 2,216.10
4. Step 4: Simplify right side
   3,984.51x = 12,185,874.27
5. Step 5: Solve for x
   x = 12,185,874.27/3,984.51
6. Step 6: Final answer
   x = 3,058.32